".5$ a piece is high if you ask me...
Iv'e recently purchased 150 O2 sensors from scrap medical supply.
Ended up with 1.2g Pt and about 50g of gold plated pins... Do the math, this is from a very high end products. "

I "assumed" he was referring to automotive O2 senors. What are O2 sensors from the medical indutry? Mike